Visco-plastic chaboche model for nickel-based alloys under anisothermal cyclic loading

The mechanical behavior of visco-plastic materials such as nickel-based alloys is highly dependent on temperature. Some characteristics such as viscosity, hardening, static recovery, dynamic recovery have more or less influence on the overall behavior depending on the considered temperature. The unified constitutive model developed by Chaboche [1] is very efficient in representing this complexity as it is very adaptable and can contain many features. A basic Chaboche model contains a viscosity law and one or several hardening equations. Within these hardening equations, it is possible to add several features that will represent the complex behavior of the material. The aim of this study is to understand the role of the different parameters and the influence of the different features in an advanced Chaboche model adapted to cyclic anisothermal loading. This specific model was also developed in [2],[3]. However, part of this study is based on particular cases where different features of the model are analyzed [4]–[6].

Solar Perform

Countries

Belgium, Spain

Related Organizations

Universitat Polite`cnica de Catalunya
Spain
University of Liège
Belgium

Keywords

Finite element method, Cyclic plasticity, Plasticity -- Mathematical models, Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits, Elements finits, Mètode dels, Therm-mechanical modeling, Plasticitat -- Models matemàtics, Mechanical engineering, Engineering, computing & technology, Ingénierie, informatique & technologie, Constitutive modeling, Nickel-based superalloys, Cyclic plasticity, Thermomechanical modeling, Constitutive modeling, Ingénierie mécanique, Plasticitat, Nickel-based superalloys

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